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Finding the Fourth Proportional to 888.61, 1,332.95 and 629.77

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Solution

The fourth proportional to 888.61, 1,332.95 and 629.77 is: 944.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.61 : 1,332.95 = 629.77 : x
  2. Step 2: Convert to fraction form
    888.61/1,332.95 = 629.77/x
  3. Step 3: Cross multiply
    888.61x = 1,332.95 × 629.77
  4. Step 4: Simplify right side
    888.61x = 839,450.16
  5. Step 5: Solve for x
    x = 839,450.16/888.61
  6. Step 6: Final answer
    x = 944.68

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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.