Home / 1,112.90-1,669.74-497.03

Finding the Fourth Proportional to 1,112.90, 1,669.74 and 497.03

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Solution

The fourth proportional to 1,112.90, 1,669.74 and 497.03 is: 745.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112.90 : 1,669.74 = 497.03 : x
  2. Step 2: Convert to fraction form
    1,112.90/1,669.74 = 497.03/x
  3. Step 3: Cross multiply
    1,112.90x = 1,669.74 × 497.03
  4. Step 4: Simplify right side
    1,112.90x = 829,913.18
  5. Step 5: Solve for x
    x = 829,913.18/1,112.90
  6. Step 6: Final answer
    x = 745.72

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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.