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Finding the Fourth Proportional to 897.34, 1,346.05 and 281.06

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Solution

The fourth proportional to 897.34, 1,346.05 and 281.06 is: 421.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    897.34 : 1,346.05 = 281.06 : x
  2. Step 2: Convert to fraction form
    897.34/1,346.05 = 281.06/x
  3. Step 3: Cross multiply
    897.34x = 1,346.05 × 281.06
  4. Step 4: Simplify right side
    897.34x = 378,320.81
  5. Step 5: Solve for x
    x = 378,320.81/897.34
  6. Step 6: Final answer
    x = 421.60

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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.