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Finding the Fourth Proportional to 716.66, 1,075.08 and 705.54

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Solution

The fourth proportional to 716.66, 1,075.08 and 705.54 is: 1,058.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    716.66 : 1,075.08 = 705.54 : x
  2. Step 2: Convert to fraction form
    716.66/1,075.08 = 705.54/x
  3. Step 3: Cross multiply
    716.66x = 1,075.08 × 705.54
  4. Step 4: Simplify right side
    716.66x = 758,511.94
  5. Step 5: Solve for x
    x = 758,511.94/716.66
  6. Step 6: Final answer
    x = 1,058.40

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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.