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Finding the Fourth Proportional to 474.53, 711.31 and 242.91

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Solution

The fourth proportional to 474.53, 711.31 and 242.91 is: 364.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.53 : 711.31 = 242.91 : x
  2. Step 2: Convert to fraction form
    474.53/711.31 = 242.91/x
  3. Step 3: Cross multiply
    474.53x = 711.31 × 242.91
  4. Step 4: Simplify right side
    474.53x = 172,779.98
  5. Step 5: Solve for x
    x = 172,779.98/474.53
  6. Step 6: Final answer
    x = 364.10

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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.