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Finding the Fourth Proportional to 669.95, 924.45 and 371.18

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Solution

The fourth proportional to 669.95, 924.45 and 371.18 is: 512.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    669.95 : 924.45 = 371.18 : x
  2. Step 2: Convert to fraction form
    669.95/924.45 = 371.18/x
  3. Step 3: Cross multiply
    669.95x = 924.45 × 371.18
  4. Step 4: Simplify right side
    669.95x = 343,132.73
  5. Step 5: Solve for x
    x = 343,132.73/669.95
  6. Step 6: Final answer
    x = 512.17

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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.