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Finding the Fourth Proportional to 631.10, 945.18 and 457.04

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Solution

The fourth proportional to 631.10, 945.18 and 457.04 is: 684.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.10 : 945.18 = 457.04 : x
  2. Step 2: Convert to fraction form
    631.10/945.18 = 457.04/x
  3. Step 3: Cross multiply
    631.10x = 945.18 × 457.04
  4. Step 4: Simplify right side
    631.10x = 431,985.07
  5. Step 5: Solve for x
    x = 431,985.07/631.10
  6. Step 6: Final answer
    x = 684.50

Related Problems

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Half scale
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Double scale
Find fourth proportional to 632.10, 946.68 and 458.04
Similar ratio
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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.