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Finding the Fourth Proportional to 1,332.42, 1,998.66 and 358.62

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Solution

The fourth proportional to 1,332.42, 1,998.66 and 358.62 is: 537.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,332.42 : 1,998.66 = 358.62 : x
  2. Step 2: Convert to fraction form
    1,332.42/1,998.66 = 358.62/x
  3. Step 3: Cross multiply
    1,332.42x = 1,998.66 × 358.62
  4. Step 4: Simplify right side
    1,332.42x = 716,759.45
  5. Step 5: Solve for x
    x = 716,759.45/1,332.42
  6. Step 6: Final answer
    x = 537.94

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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.