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Finding the Fourth Proportional to 560.61, 840.40 and 514.49

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Solution

The fourth proportional to 560.61, 840.40 and 514.49 is: 771.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.61 : 840.40 = 514.49 : x
  2. Step 2: Convert to fraction form
    560.61/840.40 = 514.49/x
  3. Step 3: Cross multiply
    560.61x = 840.40 × 514.49
  4. Step 4: Simplify right side
    560.61x = 432,371.91
  5. Step 5: Solve for x
    x = 432,371.91/560.61
  6. Step 6: Final answer
    x = 771.25

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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.