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Finding the Fourth Proportional to 955.18, 1,430.20 and 606.63

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Solution

The fourth proportional to 955.18, 1,430.20 and 606.63 is: 908.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    955.18 : 1,430.20 = 606.63 : x
  2. Step 2: Convert to fraction form
    955.18/1,430.20 = 606.63/x
  3. Step 3: Cross multiply
    955.18x = 1,430.20 × 606.63
  4. Step 4: Simplify right side
    955.18x = 867,602.23
  5. Step 5: Solve for x
    x = 867,602.23/955.18
  6. Step 6: Final answer
    x = 908.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.