Home / 1,145.90-1,719.67-497.10

Finding the Fourth Proportional to 1,145.90, 1,719.67 and 497.10

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Solution

The fourth proportional to 1,145.90, 1,719.67 and 497.10 is: 746.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,145.90 : 1,719.67 = 497.10 : x
  2. Step 2: Convert to fraction form
    1,145.90/1,719.67 = 497.10/x
  3. Step 3: Cross multiply
    1,145.90x = 1,719.67 × 497.10
  4. Step 4: Simplify right side
    1,145.90x = 854,847.96
  5. Step 5: Solve for x
    x = 854,847.96/1,145.90
  6. Step 6: Final answer
    x = 746.01

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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.