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Finding the Fourth Proportional to 1,535.98, 2,303.40 and 611.26

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Solution

The fourth proportional to 1,535.98, 2,303.40 and 611.26 is: 916.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,535.98 : 2,303.40 = 611.26 : x
  2. Step 2: Convert to fraction form
    1,535.98/2,303.40 = 611.26/x
  3. Step 3: Cross multiply
    1,535.98x = 2,303.40 × 611.26
  4. Step 4: Simplify right side
    1,535.98x = 1,407,976.28
  5. Step 5: Solve for x
    x = 1,407,976.28/1,535.98
  6. Step 6: Final answer
    x = 916.66

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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.