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Finding the Fourth Proportional to 433.62, 598.40 and 256.55

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Solution

The fourth proportional to 433.62, 598.40 and 256.55 is: 354.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.62 : 598.40 = 256.55 : x
  2. Step 2: Convert to fraction form
    433.62/598.40 = 256.55/x
  3. Step 3: Cross multiply
    433.62x = 598.40 × 256.55
  4. Step 4: Simplify right side
    433.62x = 153,515.25
  5. Step 5: Solve for x
    x = 153,515.25/433.62
  6. Step 6: Final answer
    x = 354.03

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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.