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Finding the Fourth Proportional to 1,166.80, 1,751.55 and 705.10

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Solution

The fourth proportional to 1,166.80, 1,751.55 and 705.10 is: 1,058.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,166.80 : 1,751.55 = 705.10 : x
  2. Step 2: Convert to fraction form
    1,166.80/1,751.55 = 705.10/x
  3. Step 3: Cross multiply
    1,166.80x = 1,751.55 × 705.10
  4. Step 4: Simplify right side
    1,166.80x = 1,235,017.91
  5. Step 5: Solve for x
    x = 1,235,017.91/1,166.80
  6. Step 6: Final answer
    x = 1,058.47

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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.