Home / 1,217.10-1,824.45-632.40

Finding the Fourth Proportional to 1,217.10, 1,824.45 and 632.40

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Solution

The fourth proportional to 1,217.10, 1,824.45 and 632.40 is: 947.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217.10 : 1,824.45 = 632.40 : x
  2. Step 2: Convert to fraction form
    1,217.10/1,824.45 = 632.40/x
  3. Step 3: Cross multiply
    1,217.10x = 1,824.45 × 632.40
  4. Step 4: Simplify right side
    1,217.10x = 1,153,782.18
  5. Step 5: Solve for x
    x = 1,153,782.18/1,217.10
  6. Step 6: Final answer
    x = 947.98

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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.