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Finding the Fourth Proportional to 691.04, 1,035.87 and 362.08

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Solution

The fourth proportional to 691.04, 1,035.87 and 362.08 is: 542.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    691.04 : 1,035.87 = 362.08 : x
  2. Step 2: Convert to fraction form
    691.04/1,035.87 = 362.08/x
  3. Step 3: Cross multiply
    691.04x = 1,035.87 × 362.08
  4. Step 4: Simplify right side
    691.04x = 375,067.81
  5. Step 5: Solve for x
    x = 375,067.81/691.04
  6. Step 6: Final answer
    x = 542.76

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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.