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Finding the Fourth Proportional to 542.66, 809.62 and 474.08

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Solution

The fourth proportional to 542.66, 809.62 and 474.08 is: 707.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    542.66 : 809.62 = 474.08 : x
  2. Step 2: Convert to fraction form
    542.66/809.62 = 474.08/x
  3. Step 3: Cross multiply
    542.66x = 809.62 × 474.08
  4. Step 4: Simplify right side
    542.66x = 383,824.65
  5. Step 5: Solve for x
    x = 383,824.65/542.66
  6. Step 6: Final answer
    x = 707.30

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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.