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Finding the Fourth Proportional to 946.68, 1,306.57 and 548.35

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Solution

The fourth proportional to 946.68, 1,306.57 and 548.35 is: 756.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    946.68 : 1,306.57 = 548.35 : x
  2. Step 2: Convert to fraction form
    946.68/1,306.57 = 548.35/x
  3. Step 3: Cross multiply
    946.68x = 1,306.57 × 548.35
  4. Step 4: Simplify right side
    946.68x = 716,457.66
  5. Step 5: Solve for x
    x = 716,457.66/946.68
  6. Step 6: Final answer
    x = 756.81

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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.