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Finding the Fourth Proportional to 1,453.84, 2,006.32 and 790.70

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Solution

The fourth proportional to 1,453.84, 2,006.32 and 790.70 is: 1,091.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,453.84 : 2,006.32 = 790.70 : x
  2. Step 2: Convert to fraction form
    1,453.84/2,006.32 = 790.70/x
  3. Step 3: Cross multiply
    1,453.84x = 2,006.32 × 790.70
  4. Step 4: Simplify right side
    1,453.84x = 1,586,397.22
  5. Step 5: Solve for x
    x = 1,586,397.22/1,453.84
  6. Step 6: Final answer
    x = 1,091.18

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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.