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Finding the Fourth Proportional to 1,152.97, 1,590.50 and 710.57

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Solution

The fourth proportional to 1,152.97, 1,590.50 and 710.57 is: 980.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152.97 : 1,590.50 = 710.57 : x
  2. Step 2: Convert to fraction form
    1,152.97/1,590.50 = 710.57/x
  3. Step 3: Cross multiply
    1,152.97x = 1,590.50 × 710.57
  4. Step 4: Simplify right side
    1,152.97x = 1,130,167.34
  5. Step 5: Solve for x
    x = 1,130,167.34/1,152.97
  6. Step 6: Final answer
    x = 980.22

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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.