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Finding the Fourth Proportional to 955.05, 1,317.98 and 581.98

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Solution

The fourth proportional to 955.05, 1,317.98 and 581.98 is: 803.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.05 : 1,317.98 = 581.98 : x
  2. Step 2: Convert to fraction form
    955.05/1,317.98 = 581.98/x
  3. Step 3: Cross multiply
    955.05x = 1,317.98 × 581.98
  4. Step 4: Simplify right side
    955.05x = 767,038.00
  5. Step 5: Solve for x
    x = 767,038.00/955.05
  6. Step 6: Final answer
    x = 803.14

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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.