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Finding the Fourth Proportional to 953.45, 1,316.00 and 555.44

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Solution

The fourth proportional to 953.45, 1,316.00 and 555.44 is: 766.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    953.45 : 1,316.00 = 555.44 : x
  2. Step 2: Convert to fraction form
    953.45/1,316.00 = 555.44/x
  3. Step 3: Cross multiply
    953.45x = 1,316.00 × 555.44
  4. Step 4: Simplify right side
    953.45x = 730,956.26
  5. Step 5: Solve for x
    x = 730,956.26/953.45
  6. Step 6: Final answer
    x = 766.64

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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.