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Finding the Fourth Proportional to 685.04, 946.24 and 511.16

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Solution

The fourth proportional to 685.04, 946.24 and 511.16 is: 706.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    685.04 : 946.24 = 511.16 : x
  2. Step 2: Convert to fraction form
    685.04/946.24 = 511.16/x
  3. Step 3: Cross multiply
    685.04x = 946.24 × 511.16
  4. Step 4: Simplify right side
    685.04x = 483,680.04
  5. Step 5: Solve for x
    x = 483,680.04/685.04
  6. Step 6: Final answer
    x = 706.06

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1.5x scale

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.