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Finding the Fourth Proportional to 753.86, 1,041.34 and 607.06

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Solution

The fourth proportional to 753.86, 1,041.34 and 607.06 is: 838.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    753.86 : 1,041.34 = 607.06 : x
  2. Step 2: Convert to fraction form
    753.86/1,041.34 = 607.06/x
  3. Step 3: Cross multiply
    753.86x = 1,041.34 × 607.06
  4. Step 4: Simplify right side
    753.86x = 632,155.86
  5. Step 5: Solve for x
    x = 632,155.86/753.86
  6. Step 6: Final answer
    x = 838.56

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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.