Home / 1,022.30-1,531.65-637.10

Finding the Fourth Proportional to 1,022.30, 1,531.65 and 637.10

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Solution

The fourth proportional to 1,022.30, 1,531.65 and 637.10 is: 954.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,022.30 : 1,531.65 = 637.10 : x
  2. Step 2: Convert to fraction form
    1,022.30/1,531.65 = 637.10/x
  3. Step 3: Cross multiply
    1,022.30x = 1,531.65 × 637.10
  4. Step 4: Simplify right side
    1,022.30x = 975,814.22
  5. Step 5: Solve for x
    x = 975,814.22/1,022.30
  6. Step 6: Final answer
    x = 954.53

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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.