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Finding the Fourth Proportional to 580.40, 866.39 and 537.57

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Solution

The fourth proportional to 580.40, 866.39 and 537.57 is: 802.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    580.40 : 866.39 = 537.57 : x
  2. Step 2: Convert to fraction form
    580.40/866.39 = 537.57/x
  3. Step 3: Cross multiply
    580.40x = 866.39 × 537.57
  4. Step 4: Simplify right side
    580.40x = 465,742.58
  5. Step 5: Solve for x
    x = 465,742.58/580.40
  6. Step 6: Final answer
    x = 802.45

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.