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Finding the Fourth Proportional to 630.56, 870.12 and 364.92

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Solution

The fourth proportional to 630.56, 870.12 and 364.92 is: 503.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.56 : 870.12 = 364.92 : x
  2. Step 2: Convert to fraction form
    630.56/870.12 = 364.92/x
  3. Step 3: Cross multiply
    630.56x = 870.12 × 364.92
  4. Step 4: Simplify right side
    630.56x = 317,524.19
  5. Step 5: Solve for x
    x = 317,524.19/630.56
  6. Step 6: Final answer
    x = 503.56

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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.