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Finding the Fourth Proportional to 1,302.48, 1,953.02 and 571.21

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Solution

The fourth proportional to 1,302.48, 1,953.02 and 571.21 is: 856.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,302.48 : 1,953.02 = 571.21 : x
  2. Step 2: Convert to fraction form
    1,302.48/1,953.02 = 571.21/x
  3. Step 3: Cross multiply
    1,302.48x = 1,953.02 × 571.21
  4. Step 4: Simplify right side
    1,302.48x = 1,115,584.55
  5. Step 5: Solve for x
    x = 1,115,584.55/1,302.48
  6. Step 6: Final answer
    x = 856.51

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Double scale
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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.