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Finding the Fourth Proportional to 438.04, 655.78 and 283.52

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Solution

The fourth proportional to 438.04, 655.78 and 283.52 is: 424.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    438.04 : 655.78 = 283.52 : x
  2. Step 2: Convert to fraction form
    438.04/655.78 = 283.52/x
  3. Step 3: Cross multiply
    438.04x = 655.78 × 283.52
  4. Step 4: Simplify right side
    438.04x = 185,926.75
  5. Step 5: Solve for x
    x = 185,926.75/438.04
  6. Step 6: Final answer
    x = 424.45

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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.