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Finding the Fourth Proportional to 501.80, 747.55 and 479.32

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Solution

The fourth proportional to 501.80, 747.55 and 479.32 is: 714.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.80 : 747.55 = 479.32 : x
  2. Step 2: Convert to fraction form
    501.80/747.55 = 479.32/x
  3. Step 3: Cross multiply
    501.80x = 747.55 × 479.32
  4. Step 4: Simplify right side
    501.80x = 358,311.93
  5. Step 5: Solve for x
    x = 358,311.93/501.80
  6. Step 6: Final answer
    x = 714.05

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.