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Finding the Fourth Proportional to 501.52, 691.11 and 361.39

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Solution

The fourth proportional to 501.52, 691.11 and 361.39 is: 498.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.52 : 691.11 = 361.39 : x
  2. Step 2: Convert to fraction form
    501.52/691.11 = 361.39/x
  3. Step 3: Cross multiply
    501.52x = 691.11 × 361.39
  4. Step 4: Simplify right side
    501.52x = 249,760.24
  5. Step 5: Solve for x
    x = 249,760.24/501.52
  6. Step 6: Final answer
    x = 498.01

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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.