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Finding the Fourth Proportional to 888.10, 1,332.14 and 400.81

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Solution

The fourth proportional to 888.10, 1,332.14 and 400.81 is: 601.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.10 : 1,332.14 = 400.81 : x
  2. Step 2: Convert to fraction form
    888.10/1,332.14 = 400.81/x
  3. Step 3: Cross multiply
    888.10x = 1,332.14 × 400.81
  4. Step 4: Simplify right side
    888.10x = 533,935.03
  5. Step 5: Solve for x
    x = 533,935.03/888.10
  6. Step 6: Final answer
    x = 601.21

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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.