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Finding the Fourth Proportional to 651.07, 899.13 and 545.10

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Solution

The fourth proportional to 651.07, 899.13 and 545.10 is: 752.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    651.07 : 899.13 = 545.10 : x
  2. Step 2: Convert to fraction form
    651.07/899.13 = 545.10/x
  3. Step 3: Cross multiply
    651.07x = 899.13 × 545.10
  4. Step 4: Simplify right side
    651.07x = 490,114.44
  5. Step 5: Solve for x
    x = 490,114.44/651.07
  6. Step 6: Final answer
    x = 752.78

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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.