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Finding the Fourth Proportional to 1,057.54, 1,459.40 and 591.79

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Solution

The fourth proportional to 1,057.54, 1,459.40 and 591.79 is: 816.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,057.54 : 1,459.40 = 591.79 : x
  2. Step 2: Convert to fraction form
    1,057.54/1,459.40 = 591.79/x
  3. Step 3: Cross multiply
    1,057.54x = 1,459.40 × 591.79
  4. Step 4: Simplify right side
    1,057.54x = 863,657.78
  5. Step 5: Solve for x
    x = 863,657.78/1,057.54
  6. Step 6: Final answer
    x = 816.67

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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.