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Finding the Fourth Proportional to 433.90, 598.80 and 247.42

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Solution

The fourth proportional to 433.90, 598.80 and 247.42 is: 341.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.90 : 598.80 = 247.42 : x
  2. Step 2: Convert to fraction form
    433.90/598.80 = 247.42/x
  3. Step 3: Cross multiply
    433.90x = 598.80 × 247.42
  4. Step 4: Simplify right side
    433.90x = 148,155.10
  5. Step 5: Solve for x
    x = 148,155.10/433.90
  6. Step 6: Final answer
    x = 341.45

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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.