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Finding the Fourth Proportional to 953.16, 1,315.48 and 580.27

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Solution

The fourth proportional to 953.16, 1,315.48 and 580.27 is: 800.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    953.16 : 1,315.48 = 580.27 : x
  2. Step 2: Convert to fraction form
    953.16/1,315.48 = 580.27/x
  3. Step 3: Cross multiply
    953.16x = 1,315.48 × 580.27
  4. Step 4: Simplify right side
    953.16x = 763,328.84
  5. Step 5: Solve for x
    x = 763,328.84/953.16
  6. Step 6: Final answer
    x = 800.84

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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.