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Finding the Fourth Proportional to 777.64, 1,166.46 and 473

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Solution

The fourth proportional to 777.64, 1,166.46 and 473 is: 709.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    777.64 : 1,166.46 = 473 : x
  2. Step 2: Convert to fraction form
    777.64/1,166.46 = 473/x
  3. Step 3: Cross multiply
    777.64x = 1,166.46 × 473
  4. Step 4: Simplify right side
    777.64x = 551,735.58
  5. Step 5: Solve for x
    x = 551,735.58/777.64
  6. Step 6: Final answer
    x = 709.50

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.