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Finding the Fourth Proportional to 558.63, 833.22 and 488.57

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Solution

The fourth proportional to 558.63, 833.22 and 488.57 is: 728.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.63 : 833.22 = 488.57 : x
  2. Step 2: Convert to fraction form
    558.63/833.22 = 488.57/x
  3. Step 3: Cross multiply
    558.63x = 833.22 × 488.57
  4. Step 4: Simplify right side
    558.63x = 407,082.13
  5. Step 5: Solve for x
    x = 407,082.13/558.63
  6. Step 6: Final answer
    x = 728.72

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.