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Finding the Fourth Proportional to 653.13, 900.68 and 431.82

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Solution

The fourth proportional to 653.13, 900.68 and 431.82 is: 595.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    653.13 : 900.68 = 431.82 : x
  2. Step 2: Convert to fraction form
    653.13/900.68 = 431.82/x
  3. Step 3: Cross multiply
    653.13x = 900.68 × 431.82
  4. Step 4: Simplify right side
    653.13x = 388,929.48
  5. Step 5: Solve for x
    x = 388,929.48/653.13
  6. Step 6: Final answer
    x = 595.49

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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.