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Finding the Fourth Proportional to 916.58, 1,265.63 and 654.75

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Solution

The fourth proportional to 916.58, 1,265.63 and 654.75 is: 904.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    916.58 : 1,265.63 = 654.75 : x
  2. Step 2: Convert to fraction form
    916.58/1,265.63 = 654.75/x
  3. Step 3: Cross multiply
    916.58x = 1,265.63 × 654.75
  4. Step 4: Simplify right side
    916.58x = 828,667.97
  5. Step 5: Solve for x
    x = 828,667.97/916.58
  6. Step 6: Final answer
    x = 904.08

Related Problems

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Half scale
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Double scale
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1.5x scale

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.