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Finding the Fourth Proportional to 888.98, 1,332.70 and 576.77

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Solution

The fourth proportional to 888.98, 1,332.70 and 576.77 is: 864.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.98 : 1,332.70 = 576.77 : x
  2. Step 2: Convert to fraction form
    888.98/1,332.70 = 576.77/x
  3. Step 3: Cross multiply
    888.98x = 1,332.70 × 576.77
  4. Step 4: Simplify right side
    888.98x = 768,661.38
  5. Step 5: Solve for x
    x = 768,661.38/888.98
  6. Step 6: Final answer
    x = 864.66

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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.