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Finding the Fourth Proportional to 532.86, 735.23 and 311.77

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Solution

The fourth proportional to 532.86, 735.23 and 311.77 is: 430.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    532.86 : 735.23 = 311.77 : x
  2. Step 2: Convert to fraction form
    532.86/735.23 = 311.77/x
  3. Step 3: Cross multiply
    532.86x = 735.23 × 311.77
  4. Step 4: Simplify right side
    532.86x = 229,221.60
  5. Step 5: Solve for x
    x = 229,221.60/532.86
  6. Step 6: Final answer
    x = 430.17

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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.