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Finding the Fourth Proportional to 954.32, 1,317.12 and 561.58

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Solution

The fourth proportional to 954.32, 1,317.12 and 561.58 is: 775.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    954.32 : 1,317.12 = 561.58 : x
  2. Step 2: Convert to fraction form
    954.32/1,317.12 = 561.58/x
  3. Step 3: Cross multiply
    954.32x = 1,317.12 × 561.58
  4. Step 4: Simplify right side
    954.32x = 739,668.25
  5. Step 5: Solve for x
    x = 739,668.25/954.32
  6. Step 6: Final answer
    x = 775.07

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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.