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Finding the Fourth Proportional to 716.00, 1,075.80 and 456.12

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Solution

The fourth proportional to 716.00, 1,075.80 and 456.12 is: 685.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    716.00 : 1,075.80 = 456.12 : x
  2. Step 2: Convert to fraction form
    716.00/1,075.80 = 456.12/x
  3. Step 3: Cross multiply
    716.00x = 1,075.80 × 456.12
  4. Step 4: Simplify right side
    716.00x = 490,693.90
  5. Step 5: Solve for x
    x = 490,693.90/716.00
  6. Step 6: Final answer
    x = 685.33

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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.