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Finding the Fourth Proportional to 630.62, 870.14 and 365.02

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Solution

The fourth proportional to 630.62, 870.14 and 365.02 is: 503.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.62 : 870.14 = 365.02 : x
  2. Step 2: Convert to fraction form
    630.62/870.14 = 365.02/x
  3. Step 3: Cross multiply
    630.62x = 870.14 × 365.02
  4. Step 4: Simplify right side
    630.62x = 317,618.50
  5. Step 5: Solve for x
    x = 317,618.50/630.62
  6. Step 6: Final answer
    x = 503.66

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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.