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Finding the Fourth Proportional to 1,430, 2,148.59 and 910.23

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Solution

The fourth proportional to 1,430, 2,148.59 and 910.23 is: 1,367.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,430 : 2,148.59 = 910.23 : x
  2. Step 2: Convert to fraction form
    1,430/2,148.59 = 910.23/x
  3. Step 3: Cross multiply
    1,430x = 2,148.59 × 910.23
  4. Step 4: Simplify right side
    1,430x = 1,955,711.08
  5. Step 5: Solve for x
    x = 1,955,711.08/1,430
  6. Step 6: Final answer
    x = 1,367.63

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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.