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Finding the Fourth Proportional to 530.64, 731.26 and 383

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Solution

The fourth proportional to 530.64, 731.26 and 383 is: 527.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.64 : 731.26 = 383 : x
  2. Step 2: Convert to fraction form
    530.64/731.26 = 383/x
  3. Step 3: Cross multiply
    530.64x = 731.26 × 383
  4. Step 4: Simplify right side
    530.64x = 280,072.58
  5. Step 5: Solve for x
    x = 280,072.58/530.64
  6. Step 6: Final answer
    x = 527.80

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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.