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Finding the Fourth Proportional to 665.04, 916.05 and 560.01

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Solution

The fourth proportional to 665.04, 916.05 and 560.01 is: 771.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    665.04 : 916.05 = 560.01 : x
  2. Step 2: Convert to fraction form
    665.04/916.05 = 560.01/x
  3. Step 3: Cross multiply
    665.04x = 916.05 × 560.01
  4. Step 4: Simplify right side
    665.04x = 512,997.16
  5. Step 5: Solve for x
    x = 512,997.16/665.04
  6. Step 6: Final answer
    x = 771.38

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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.