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Finding the Fourth Proportional to 1,593.40, 2,390.70 and 620.17

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Solution

The fourth proportional to 1,593.40, 2,390.70 and 620.17 is: 930.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,593.40 : 2,390.70 = 620.17 : x
  2. Step 2: Convert to fraction form
    1,593.40/2,390.70 = 620.17/x
  3. Step 3: Cross multiply
    1,593.40x = 2,390.70 × 620.17
  4. Step 4: Simplify right side
    1,593.40x = 1,482,640.42
  5. Step 5: Solve for x
    x = 1,482,640.42/1,593.40
  6. Step 6: Final answer
    x = 930.49

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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.