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Finding the Fourth Proportional to 875.16, 1,207.17 and 700.20

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Solution

The fourth proportional to 875.16, 1,207.17 and 700.20 is: 965.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    875.16 : 1,207.17 = 700.20 : x
  2. Step 2: Convert to fraction form
    875.16/1,207.17 = 700.20/x
  3. Step 3: Cross multiply
    875.16x = 1,207.17 × 700.20
  4. Step 4: Simplify right side
    875.16x = 845,260.43
  5. Step 5: Solve for x
    x = 845,260.43/875.16
  6. Step 6: Final answer
    x = 965.84

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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.