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Finding the Fourth Proportional to 1,564.40, 2,346.30 and 468.80

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Solution

The fourth proportional to 1,564.40, 2,346.30 and 468.80 is: 703.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,564.40 : 2,346.30 = 468.80 : x
  2. Step 2: Convert to fraction form
    1,564.40/2,346.30 = 468.80/x
  3. Step 3: Cross multiply
    1,564.40x = 2,346.30 × 468.80
  4. Step 4: Simplify right side
    1,564.40x = 1,099,945.44
  5. Step 5: Solve for x
    x = 1,099,945.44/1,564.40
  6. Step 6: Final answer
    x = 703.11

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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.