Home / 1,315.02-1,972.50-341.13

Finding the Fourth Proportional to 1,315.02, 1,972.50 and 341.13

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Solution

The fourth proportional to 1,315.02, 1,972.50 and 341.13 is: 511.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315.02 : 1,972.50 = 341.13 : x
  2. Step 2: Convert to fraction form
    1,315.02/1,972.50 = 341.13/x
  3. Step 3: Cross multiply
    1,315.02x = 1,972.50 × 341.13
  4. Step 4: Simplify right side
    1,315.02x = 672,878.93
  5. Step 5: Solve for x
    x = 672,878.93/1,315.02
  6. Step 6: Final answer
    x = 511.69

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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.