Home / 1,357.32-2,036.28-491.70

Finding the Fourth Proportional to 1,357.32, 2,036.28 and 491.70

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Solution

The fourth proportional to 1,357.32, 2,036.28 and 491.70 is: 737.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,357.32 : 2,036.28 = 491.70 : x
  2. Step 2: Convert to fraction form
    1,357.32/2,036.28 = 491.70/x
  3. Step 3: Cross multiply
    1,357.32x = 2,036.28 × 491.70
  4. Step 4: Simplify right side
    1,357.32x = 1,001,238.88
  5. Step 5: Solve for x
    x = 1,001,238.88/1,357.32
  6. Step 6: Final answer
    x = 737.66

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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.