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Finding the Fourth Proportional to 954.71, 1,317.45 and 556.32

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Solution

The fourth proportional to 954.71, 1,317.45 and 556.32 is: 767.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    954.71 : 1,317.45 = 556.32 : x
  2. Step 2: Convert to fraction form
    954.71/1,317.45 = 556.32/x
  3. Step 3: Cross multiply
    954.71x = 1,317.45 × 556.32
  4. Step 4: Simplify right side
    954.71x = 732,923.78
  5. Step 5: Solve for x
    x = 732,923.78/954.71
  6. Step 6: Final answer
    x = 767.70

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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.