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Finding the Fourth Proportional to 653.47, 901.83 and 613.88

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Solution

The fourth proportional to 653.47, 901.83 and 613.88 is: 847.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.47 : 901.83 = 613.88 : x
  2. Step 2: Convert to fraction form
    653.47/901.83 = 613.88/x
  3. Step 3: Cross multiply
    653.47x = 901.83 × 613.88
  4. Step 4: Simplify right side
    653.47x = 553,616.58
  5. Step 5: Solve for x
    x = 553,616.58/653.47
  6. Step 6: Final answer
    x = 847.20

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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.