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Finding the Fourth Proportional to 652.60, 899.02 and 455.76

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Solution

The fourth proportional to 652.60, 899.02 and 455.76 is: 627.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    652.60 : 899.02 = 455.76 : x
  2. Step 2: Convert to fraction form
    652.60/899.02 = 455.76/x
  3. Step 3: Cross multiply
    652.60x = 899.02 × 455.76
  4. Step 4: Simplify right side
    652.60x = 409,737.36
  5. Step 5: Solve for x
    x = 409,737.36/652.60
  6. Step 6: Final answer
    x = 627.85

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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.