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Finding the Fourth Proportional to 607.34, 837.80 and 385.90

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Solution

The fourth proportional to 607.34, 837.80 and 385.90 is: 532.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    607.34 : 837.80 = 385.90 : x
  2. Step 2: Convert to fraction form
    607.34/837.80 = 385.90/x
  3. Step 3: Cross multiply
    607.34x = 837.80 × 385.90
  4. Step 4: Simplify right side
    607.34x = 323,307.02
  5. Step 5: Solve for x
    x = 323,307.02/607.34
  6. Step 6: Final answer
    x = 532.33

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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.