Home / 1,148.17-1,584.47-624.20

Finding the Fourth Proportional to 1,148.17, 1,584.47 and 624.20

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Solution

The fourth proportional to 1,148.17, 1,584.47 and 624.20 is: 861.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,148.17 : 1,584.47 = 624.20 : x
  2. Step 2: Convert to fraction form
    1,148.17/1,584.47 = 624.20/x
  3. Step 3: Cross multiply
    1,148.17x = 1,584.47 × 624.20
  4. Step 4: Simplify right side
    1,148.17x = 989,028.72
  5. Step 5: Solve for x
    x = 989,028.72/1,148.17
  6. Step 6: Final answer
    x = 861.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.