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Finding the Fourth Proportional to 1,057.12, 1,585.44 and 373.12

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Solution

The fourth proportional to 1,057.12, 1,585.44 and 373.12 is: 559.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,057.12 : 1,585.44 = 373.12 : x
  2. Step 2: Convert to fraction form
    1,057.12/1,585.44 = 373.12/x
  3. Step 3: Cross multiply
    1,057.12x = 1,585.44 × 373.12
  4. Step 4: Simplify right side
    1,057.12x = 591,559.37
  5. Step 5: Solve for x
    x = 591,559.37/1,057.12
  6. Step 6: Final answer
    x = 559.60

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.