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Finding the Fourth Proportional to 947.37, 1,307.23 and 543.54

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Solution

The fourth proportional to 947.37, 1,307.23 and 543.54 is: 750.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    947.37 : 1,307.23 = 543.54 : x
  2. Step 2: Convert to fraction form
    947.37/1,307.23 = 543.54/x
  3. Step 3: Cross multiply
    947.37x = 1,307.23 × 543.54
  4. Step 4: Simplify right side
    947.37x = 710,531.79
  5. Step 5: Solve for x
    x = 710,531.79/947.37
  6. Step 6: Final answer
    x = 750.00

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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.