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Finding the Fourth Proportional to 653.13, 981.74 and 603.92

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Solution

The fourth proportional to 653.13, 981.74 and 603.92 is: 907.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.13 : 981.74 = 603.92 : x
  2. Step 2: Convert to fraction form
    653.13/981.74 = 603.92/x
  3. Step 3: Cross multiply
    653.13x = 981.74 × 603.92
  4. Step 4: Simplify right side
    653.13x = 592,896.38
  5. Step 5: Solve for x
    x = 592,896.38/653.13
  6. Step 6: Final answer
    x = 907.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.