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Finding the Fourth Proportional to 1,417.65, 1,957.02 and 946.35

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Solution

The fourth proportional to 1,417.65, 1,957.02 and 946.35 is: 1,306.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,417.65 : 1,957.02 = 946.35 : x
  2. Step 2: Convert to fraction form
    1,417.65/1,957.02 = 946.35/x
  3. Step 3: Cross multiply
    1,417.65x = 1,957.02 × 946.35
  4. Step 4: Simplify right side
    1,417.65x = 1,852,025.88
  5. Step 5: Solve for x
    x = 1,852,025.88/1,417.65
  6. Step 6: Final answer
    x = 1,306.41

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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.