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Finding the Fourth Proportional to 875.00, 1,312.00 and 412.49

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Solution

The fourth proportional to 875.00, 1,312.00 and 412.49 is: 618.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    875.00 : 1,312.00 = 412.49 : x
  2. Step 2: Convert to fraction form
    875.00/1,312.00 = 412.49/x
  3. Step 3: Cross multiply
    875.00x = 1,312.00 × 412.49
  4. Step 4: Simplify right side
    875.00x = 541,189.13
  5. Step 5: Solve for x
    x = 541,189.13/875.00
  6. Step 6: Final answer
    x = 618.50

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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.