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Finding the Fourth Proportional to 545, 752.37 and 512.60

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Solution

The fourth proportional to 545, 752.37 and 512.60 is: 707.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    545 : 752.37 = 512.60 : x
  2. Step 2: Convert to fraction form
    545/752.37 = 512.60/x
  3. Step 3: Cross multiply
    545x = 752.37 × 512.60
  4. Step 4: Simplify right side
    545x = 385,664.86
  5. Step 5: Solve for x
    x = 385,664.86/545
  6. Step 6: Final answer
    x = 707.64

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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.