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Finding the Fourth Proportional to 897.03, 1,237.89 and 547.72

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Solution

The fourth proportional to 897.03, 1,237.89 and 547.72 is: 755.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    897.03 : 1,237.89 = 547.72 : x
  2. Step 2: Convert to fraction form
    897.03/1,237.89 = 547.72/x
  3. Step 3: Cross multiply
    897.03x = 1,237.89 × 547.72
  4. Step 4: Simplify right side
    897.03x = 678,014.02
  5. Step 5: Solve for x
    x = 678,014.02/897.03
  6. Step 6: Final answer
    x = 755.84

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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.