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Finding the Fourth Proportional to 846.77, 1,168.55 and 473.78

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Solution

The fourth proportional to 846.77, 1,168.55 and 473.78 is: 653.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    846.77 : 1,168.55 = 473.78 : x
  2. Step 2: Convert to fraction form
    846.77/1,168.55 = 473.78/x
  3. Step 3: Cross multiply
    846.77x = 1,168.55 × 473.78
  4. Step 4: Simplify right side
    846.77x = 553,630.96
  5. Step 5: Solve for x
    x = 553,630.96/846.77
  6. Step 6: Final answer
    x = 653.82

Related Problems

Find fourth proportional to 423.38, 584.28 and 236.89
Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.