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Finding the Fourth Proportional to 525.69, 724.28 and 476.55

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Solution

The fourth proportional to 525.69, 724.28 and 476.55 is: 656.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.69 : 724.28 = 476.55 : x
  2. Step 2: Convert to fraction form
    525.69/724.28 = 476.55/x
  3. Step 3: Cross multiply
    525.69x = 724.28 × 476.55
  4. Step 4: Simplify right side
    525.69x = 345,153.25
  5. Step 5: Solve for x
    x = 345,153.25/525.69
  6. Step 6: Final answer
    x = 656.57

Related Problems

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Double scale
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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.