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Finding the Fourth Proportional to 1,259.02, 1,889.07 and 710.38

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Solution

The fourth proportional to 1,259.02, 1,889.07 and 710.38 is: 1,065.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259.02 : 1,889.07 = 710.38 : x
  2. Step 2: Convert to fraction form
    1,259.02/1,889.07 = 710.38/x
  3. Step 3: Cross multiply
    1,259.02x = 1,889.07 × 710.38
  4. Step 4: Simplify right side
    1,259.02x = 1,341,961.24
  5. Step 5: Solve for x
    x = 1,341,961.24/1,259.02
  6. Step 6: Final answer
    x = 1,065.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.