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Finding the Fourth Proportional to 1,088.22, 1,499.67 and 777.18

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Solution

The fourth proportional to 1,088.22, 1,499.67 and 777.18 is: 1,071.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,088.22 : 1,499.67 = 777.18 : x
  2. Step 2: Convert to fraction form
    1,088.22/1,499.67 = 777.18/x
  3. Step 3: Cross multiply
    1,088.22x = 1,499.67 × 777.18
  4. Step 4: Simplify right side
    1,088.22x = 1,165,513.53
  5. Step 5: Solve for x
    x = 1,165,513.53/1,088.22
  6. Step 6: Final answer
    x = 1,071.03

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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.