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Finding the Fourth Proportional to 652.68, 900.56 and 505.12

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Solution

The fourth proportional to 652.68, 900.56 and 505.12 is: 696.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    652.68 : 900.56 = 505.12 : x
  2. Step 2: Convert to fraction form
    652.68/900.56 = 505.12/x
  3. Step 3: Cross multiply
    652.68x = 900.56 × 505.12
  4. Step 4: Simplify right side
    652.68x = 454,890.87
  5. Step 5: Solve for x
    x = 454,890.87/652.68
  6. Step 6: Final answer
    x = 696.96

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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.