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Finding the Fourth Proportional to 560.92, 774.64 and 499.80

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Solution

The fourth proportional to 560.92, 774.64 and 499.80 is: 690.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.92 : 774.64 = 499.80 : x
  2. Step 2: Convert to fraction form
    560.92/774.64 = 499.80/x
  3. Step 3: Cross multiply
    560.92x = 774.64 × 499.80
  4. Step 4: Simplify right side
    560.92x = 387,165.07
  5. Step 5: Solve for x
    x = 387,165.07/560.92
  6. Step 6: Final answer
    x = 690.23

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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.