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Finding the Fourth Proportional to 966.51, 1,448.40 and 555.77

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Solution

The fourth proportional to 966.51, 1,448.40 and 555.77 is: 832.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    966.51 : 1,448.40 = 555.77 : x
  2. Step 2: Convert to fraction form
    966.51/1,448.40 = 555.77/x
  3. Step 3: Cross multiply
    966.51x = 1,448.40 × 555.77
  4. Step 4: Simplify right side
    966.51x = 804,970.03
  5. Step 5: Solve for x
    x = 804,970.03/966.51
  6. Step 6: Final answer
    x = 832.86

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Double scale
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1.5x scale

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.