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Finding the Fourth Proportional to 1,749.70, 2,623 and 710.47

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Solution

The fourth proportional to 1,749.70, 2,623 and 710.47 is: 1,065.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,749.70 : 2,623 = 710.47 : x
  2. Step 2: Convert to fraction form
    1,749.70/2,623 = 710.47/x
  3. Step 3: Cross multiply
    1,749.70x = 2,623 × 710.47
  4. Step 4: Simplify right side
    1,749.70x = 1,863,562.81
  5. Step 5: Solve for x
    x = 1,863,562.81/1,749.70
  6. Step 6: Final answer
    x = 1,065.08

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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.