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Finding the Fourth Proportional to 1,059.69, 1,461.96 and 666.93

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Solution

The fourth proportional to 1,059.69, 1,461.96 and 666.93 is: 920.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,059.69 : 1,461.96 = 666.93 : x
  2. Step 2: Convert to fraction form
    1,059.69/1,461.96 = 666.93/x
  3. Step 3: Cross multiply
    1,059.69x = 1,461.96 × 666.93
  4. Step 4: Simplify right side
    1,059.69x = 975,024.98
  5. Step 5: Solve for x
    x = 975,024.98/1,059.69
  6. Step 6: Final answer
    x = 920.10

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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.