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Finding the Fourth Proportional to 630.18, 869.63 and 364.58

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Solution

The fourth proportional to 630.18, 869.63 and 364.58 is: 503.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.18 : 869.63 = 364.58 : x
  2. Step 2: Convert to fraction form
    630.18/869.63 = 364.58/x
  3. Step 3: Cross multiply
    630.18x = 869.63 × 364.58
  4. Step 4: Simplify right side
    630.18x = 317,049.71
  5. Step 5: Solve for x
    x = 317,049.71/630.18
  6. Step 6: Final answer
    x = 503.11

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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.