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Finding the Fourth Proportional to 1,315.84, 1,973.73 and 341.95

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Solution

The fourth proportional to 1,315.84, 1,973.73 and 341.95 is: 512.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,315.84 : 1,973.73 = 341.95 : x
  2. Step 2: Convert to fraction form
    1,315.84/1,973.73 = 341.95/x
  3. Step 3: Cross multiply
    1,315.84x = 1,973.73 × 341.95
  4. Step 4: Simplify right side
    1,315.84x = 674,916.97
  5. Step 5: Solve for x
    x = 674,916.97/1,315.84
  6. Step 6: Final answer
    x = 512.92

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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.