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Finding the Fourth Proportional to 810.93, 1,118.01 and 700.17

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Solution

The fourth proportional to 810.93, 1,118.01 and 700.17 is: 965.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    810.93 : 1,118.01 = 700.17 : x
  2. Step 2: Convert to fraction form
    810.93/1,118.01 = 700.17/x
  3. Step 3: Cross multiply
    810.93x = 1,118.01 × 700.17
  4. Step 4: Simplify right side
    810.93x = 782,797.06
  5. Step 5: Solve for x
    x = 782,797.06/810.93
  6. Step 6: Final answer
    x = 965.31

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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.