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Finding the Fourth Proportional to 652.51, 900.63 and 439.86

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Solution

The fourth proportional to 652.51, 900.63 and 439.86 is: 607.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    652.51 : 900.63 = 439.86 : x
  2. Step 2: Convert to fraction form
    652.51/900.63 = 439.86/x
  3. Step 3: Cross multiply
    652.51x = 900.63 × 439.86
  4. Step 4: Simplify right side
    652.51x = 396,149.42
  5. Step 5: Solve for x
    x = 396,149.42/652.51
  6. Step 6: Final answer
    x = 607.12

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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.