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Finding the Fourth Proportional to 649.64, 895.92 and 416.72

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Solution

The fourth proportional to 649.64, 895.92 and 416.72 is: 574.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    649.64 : 895.92 = 416.72 : x
  2. Step 2: Convert to fraction form
    649.64/895.92 = 416.72/x
  3. Step 3: Cross multiply
    649.64x = 895.92 × 416.72
  4. Step 4: Simplify right side
    649.64x = 373,347.78
  5. Step 5: Solve for x
    x = 373,347.78/649.64
  6. Step 6: Final answer
    x = 574.70

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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.