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Finding the Fourth Proportional to 845.39, 1,265.01 and 498.89

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Solution

The fourth proportional to 845.39, 1,265.01 and 498.89 is: 746.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    845.39 : 1,265.01 = 498.89 : x
  2. Step 2: Convert to fraction form
    845.39/1,265.01 = 498.89/x
  3. Step 3: Cross multiply
    845.39x = 1,265.01 × 498.89
  4. Step 4: Simplify right side
    845.39x = 631,101.51
  5. Step 5: Solve for x
    x = 631,101.51/845.39
  6. Step 6: Final answer
    x = 746.52

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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.