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Finding the Fourth Proportional to 550.76, 759.92 and 384.71

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Solution

The fourth proportional to 550.76, 759.92 and 384.71 is: 530.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    550.76 : 759.92 = 384.71 : x
  2. Step 2: Convert to fraction form
    550.76/759.92 = 384.71/x
  3. Step 3: Cross multiply
    550.76x = 759.92 × 384.71
  4. Step 4: Simplify right side
    550.76x = 292,343.10
  5. Step 5: Solve for x
    x = 292,343.10/550.76
  6. Step 6: Final answer
    x = 530.80

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Find fourth proportional to 275.38, 379.96 and 192.35
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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.