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Finding the Fourth Proportional to 1,057.07, 1,458.75 and 591.32

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Solution

The fourth proportional to 1,057.07, 1,458.75 and 591.32 is: 816.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,057.07 : 1,458.75 = 591.32 : x
  2. Step 2: Convert to fraction form
    1,057.07/1,458.75 = 591.32/x
  3. Step 3: Cross multiply
    1,057.07x = 1,458.75 × 591.32
  4. Step 4: Simplify right side
    1,057.07x = 862,588.05
  5. Step 5: Solve for x
    x = 862,588.05/1,057.07
  6. Step 6: Final answer
    x = 816.02

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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.