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Finding the Fourth Proportional to 484.18, 724.86 and 437.74

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Solution

The fourth proportional to 484.18, 724.86 and 437.74 is: 655.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    484.18 : 724.86 = 437.74 : x
  2. Step 2: Convert to fraction form
    484.18/724.86 = 437.74/x
  3. Step 3: Cross multiply
    484.18x = 724.86 × 437.74
  4. Step 4: Simplify right side
    484.18x = 317,300.22
  5. Step 5: Solve for x
    x = 317,300.22/484.18
  6. Step 6: Final answer
    x = 655.34

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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.