Home / 1,345.16-2,017.50-371.40

Finding the Fourth Proportional to 1,345.16, 2,017.50 and 371.40

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Solution

The fourth proportional to 1,345.16, 2,017.50 and 371.40 is: 557.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,345.16 : 2,017.50 = 371.40 : x
  2. Step 2: Convert to fraction form
    1,345.16/2,017.50 = 371.40/x
  3. Step 3: Cross multiply
    1,345.16x = 2,017.50 × 371.40
  4. Step 4: Simplify right side
    1,345.16x = 749,299.50
  5. Step 5: Solve for x
    x = 749,299.50/1,345.16
  6. Step 6: Final answer
    x = 557.03

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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.