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Finding the Fourth Proportional to 875.00, 1,313.18 and 528.72

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Solution

The fourth proportional to 875.00, 1,313.18 and 528.72 is: 793.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    875.00 : 1,313.18 = 528.72 : x
  2. Step 2: Convert to fraction form
    875.00/1,313.18 = 528.72/x
  3. Step 3: Cross multiply
    875.00x = 1,313.18 × 528.72
  4. Step 4: Simplify right side
    875.00x = 694,301.89
  5. Step 5: Solve for x
    x = 694,301.89/875.00
  6. Step 6: Final answer
    x = 793.49

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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.