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Finding the Fourth Proportional to 760.51, 1,048.57 and 668.17

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Solution

The fourth proportional to 760.51, 1,048.57 and 668.17 is: 921.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    760.51 : 1,048.57 = 668.17 : x
  2. Step 2: Convert to fraction form
    760.51/1,048.57 = 668.17/x
  3. Step 3: Cross multiply
    760.51x = 1,048.57 × 668.17
  4. Step 4: Simplify right side
    760.51x = 700,623.02
  5. Step 5: Solve for x
    x = 700,623.02/760.51
  6. Step 6: Final answer
    x = 921.25

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.