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Finding the Fourth Proportional to 2,172.95, 3,259.40 and 529.50

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Solution

The fourth proportional to 2,172.95, 3,259.40 and 529.50 is: 794.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.95 : 3,259.40 = 529.50 : x
  2. Step 2: Convert to fraction form
    2,172.95/3,259.40 = 529.50/x
  3. Step 3: Cross multiply
    2,172.95x = 3,259.40 × 529.50
  4. Step 4: Simplify right side
    2,172.95x = 1,725,852.30
  5. Step 5: Solve for x
    x = 1,725,852.30/2,172.95
  6. Step 6: Final answer
    x = 794.24

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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.