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Finding the Fourth Proportional to 935.06, 1,289.45 and 802.76

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Solution

The fourth proportional to 935.06, 1,289.45 and 802.76 is: 1,107.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    935.06 : 1,289.45 = 802.76 : x
  2. Step 2: Convert to fraction form
    935.06/1,289.45 = 802.76/x
  3. Step 3: Cross multiply
    935.06x = 1,289.45 × 802.76
  4. Step 4: Simplify right side
    935.06x = 1,035,114.87
  5. Step 5: Solve for x
    x = 1,035,114.87/935.06
  6. Step 6: Final answer
    x = 1,107.00

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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.