Home / 1,531.10-2,296.20-435.50

Finding the Fourth Proportional to 1,531.10, 2,296.20 and 435.50

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Solution

The fourth proportional to 1,531.10, 2,296.20 and 435.50 is: 653.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,531.10 : 2,296.20 = 435.50 : x
  2. Step 2: Convert to fraction form
    1,531.10/2,296.20 = 435.50/x
  3. Step 3: Cross multiply
    1,531.10x = 2,296.20 × 435.50
  4. Step 4: Simplify right side
    1,531.10x = 999,995.10
  5. Step 5: Solve for x
    x = 999,995.10/1,531.10
  6. Step 6: Final answer
    x = 653.12

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1.5x scale

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.