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Finding the Fourth Proportional to 943.76, 1,303.17 and 612.76

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Solution

The fourth proportional to 943.76, 1,303.17 and 612.76 is: 846.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    943.76 : 1,303.17 = 612.76 : x
  2. Step 2: Convert to fraction form
    943.76/1,303.17 = 612.76/x
  3. Step 3: Cross multiply
    943.76x = 1,303.17 × 612.76
  4. Step 4: Simplify right side
    943.76x = 798,527.19
  5. Step 5: Solve for x
    x = 798,527.19/943.76
  6. Step 6: Final answer
    x = 846.11

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Double scale
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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.