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Finding the Fourth Proportional to 484.77, 669.02 and 274.96

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Solution

The fourth proportional to 484.77, 669.02 and 274.96 is: 379.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.77 : 669.02 = 274.96 : x
  2. Step 2: Convert to fraction form
    484.77/669.02 = 274.96/x
  3. Step 3: Cross multiply
    484.77x = 669.02 × 274.96
  4. Step 4: Simplify right side
    484.77x = 183,954.53
  5. Step 5: Solve for x
    x = 183,954.53/484.77
  6. Step 6: Final answer
    x = 379.47

Related Problems

Find fourth proportional to 242.38, 334.51 and 137.48
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.