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Finding the Fourth Proportional to 558.96, 839.16 and 302.64

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Solution

The fourth proportional to 558.96, 839.16 and 302.64 is: 454.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.96 : 839.16 = 302.64 : x
  2. Step 2: Convert to fraction form
    558.96/839.16 = 302.64/x
  3. Step 3: Cross multiply
    558.96x = 839.16 × 302.64
  4. Step 4: Simplify right side
    558.96x = 253,963.38
  5. Step 5: Solve for x
    x = 253,963.38/558.96
  6. Step 6: Final answer
    x = 454.35

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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.