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Finding the Fourth Proportional to 384.76, 530.82 and 253.86

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Solution

The fourth proportional to 384.76, 530.82 and 253.86 is: 350.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    384.76 : 530.82 = 253.86 : x
  2. Step 2: Convert to fraction form
    384.76/530.82 = 253.86/x
  3. Step 3: Cross multiply
    384.76x = 530.82 × 253.86
  4. Step 4: Simplify right side
    384.76x = 134,753.97
  5. Step 5: Solve for x
    x = 134,753.97/384.76
  6. Step 6: Final answer
    x = 350.23

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Find fourth proportional to 192.38, 265.41 and 126.93
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Double scale
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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.