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Finding the Fourth Proportional to 954.55, 1,317.19 and 556.26

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Solution

The fourth proportional to 954.55, 1,317.19 and 556.26 is: 767.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    954.55 : 1,317.19 = 556.26 : x
  2. Step 2: Convert to fraction form
    954.55/1,317.19 = 556.26/x
  3. Step 3: Cross multiply
    954.55x = 1,317.19 × 556.26
  4. Step 4: Simplify right side
    954.55x = 732,692.13
  5. Step 5: Solve for x
    x = 732,692.13/954.55
  6. Step 6: Final answer
    x = 767.58

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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.