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Finding the Fourth Proportional to 560.63, 771.05 and 449.93

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Solution

The fourth proportional to 560.63, 771.05 and 449.93 is: 618.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    560.63 : 771.05 = 449.93 : x
  2. Step 2: Convert to fraction form
    560.63/771.05 = 449.93/x
  3. Step 3: Cross multiply
    560.63x = 771.05 × 449.93
  4. Step 4: Simplify right side
    560.63x = 346,921.58
  5. Step 5: Solve for x
    x = 346,921.58/560.63
  6. Step 6: Final answer
    x = 618.80

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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.