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Finding the Fourth Proportional to 973.41, 1,341.70 and 689.92

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Solution

The fourth proportional to 973.41, 1,341.70 and 689.92 is: 950.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    973.41 : 1,341.70 = 689.92 : x
  2. Step 2: Convert to fraction form
    973.41/1,341.70 = 689.92/x
  3. Step 3: Cross multiply
    973.41x = 1,341.70 × 689.92
  4. Step 4: Simplify right side
    973.41x = 925,655.51
  5. Step 5: Solve for x
    x = 925,655.51/973.41
  6. Step 6: Final answer
    x = 950.95

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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.