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Finding the Fourth Proportional to 571.44, 860.39 and 503.40

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Solution

The fourth proportional to 571.44, 860.39 and 503.40 is: 757.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    571.44 : 860.39 = 503.40 : x
  2. Step 2: Convert to fraction form
    571.44/860.39 = 503.40/x
  3. Step 3: Cross multiply
    571.44x = 860.39 × 503.40
  4. Step 4: Simplify right side
    571.44x = 433,117.81
  5. Step 5: Solve for x
    x = 433,117.81/571.44
  6. Step 6: Final answer
    x = 757.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.