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Finding the Fourth Proportional to 574.98, 858.10 and 560.40

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Solution

The fourth proportional to 574.98, 858.10 and 560.40 is: 836.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.98 : 858.10 = 560.40 : x
  2. Step 2: Convert to fraction form
    574.98/858.10 = 560.40/x
  3. Step 3: Cross multiply
    574.98x = 858.10 × 560.40
  4. Step 4: Simplify right side
    574.98x = 480,879.24
  5. Step 5: Solve for x
    x = 480,879.24/574.98
  6. Step 6: Final answer
    x = 836.34

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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.