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Finding the Fourth Proportional to 532.91, 735.60 and 311.93

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Solution

The fourth proportional to 532.91, 735.60 and 311.93 is: 430.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    532.91 : 735.60 = 311.93 : x
  2. Step 2: Convert to fraction form
    532.91/735.60 = 311.93/x
  3. Step 3: Cross multiply
    532.91x = 735.60 × 311.93
  4. Step 4: Simplify right side
    532.91x = 229,455.71
  5. Step 5: Solve for x
    x = 229,455.71/532.91
  6. Step 6: Final answer
    x = 430.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.