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Finding the Fourth Proportional to 615.10, 847.95 and 440.14

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Solution

The fourth proportional to 615.10, 847.95 and 440.14 is: 606.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.10 : 847.95 = 440.14 : x
  2. Step 2: Convert to fraction form
    615.10/847.95 = 440.14/x
  3. Step 3: Cross multiply
    615.10x = 847.95 × 440.14
  4. Step 4: Simplify right side
    615.10x = 373,216.71
  5. Step 5: Solve for x
    x = 373,216.71/615.10
  6. Step 6: Final answer
    x = 606.76

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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.