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Finding the Fourth Proportional to 1,622.64, 2,434.08 and 468.40

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Solution

The fourth proportional to 1,622.64, 2,434.08 and 468.40 is: 702.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,622.64 : 2,434.08 = 468.40 : x
  2. Step 2: Convert to fraction form
    1,622.64/2,434.08 = 468.40/x
  3. Step 3: Cross multiply
    1,622.64x = 2,434.08 × 468.40
  4. Step 4: Simplify right side
    1,622.64x = 1,140,123.07
  5. Step 5: Solve for x
    x = 1,140,123.07/1,622.64
  6. Step 6: Final answer
    x = 702.63

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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.